This looks like a deliberate design decision by your theme’s author. You could fix this by making a child theme, copying header.php from your parent theme to your child theme, and editing lines 51-53 from:
<?php wp_nav_menu( array( 'theme_location' => 'primary', 'container_class' => 'menu-full', 'depth' => 2 ) ); ?>
to
<?php wp_nav_menu( array( 'theme_location' => 'primary', 'container_class' => 'menu-full' ) ); ?>
-
This reply was modified 9 years, 7 months ago by
stephencottontail. Reason: accidentally left out closing parentheses